[ic] Change CompareIC to handle JSReceiver instead of JSObject.

src/ic/ic-state.cc

Index: src/ic/ic-state.cc
diff --git a/src/ic/ic-state.cc b/src/ic/ic-state.cc
index 911f538e3cee63fd853b05fdf4fa2454e76b832d..4bdaf3ff03608c9654dbb61e199b5222c1365460 100644
--- a/src/ic/ic-state.cc
+++ b/src/ic/ic-state.cc
@@ -356,10 +356,10 @@ const char* CompareICState::GetStateName(State state) {
       return "STRING";
     case UNIQUE_NAME:
       return "UNIQUE_NAME";
-    case OBJECT:
-      return "OBJECT";
-    case KNOWN_OBJECT:
-      return "KNOWN_OBJECT";
+    case RECEIVER:
+      return "RECEIVER";
+    case KNOWN_RECEIVER:
+      return "KNOWN_RECEIVER";
     case GENERIC:
       return "GENERIC";
   }
@@ -384,9 +384,9 @@ Type* CompareICState::StateToType(Zone* zone, State state, Handle<Map> map) {
       return Type::InternalizedString(zone);
     case UNIQUE_NAME:
       return Type::UniqueName(zone);
-    case OBJECT:
+    case RECEIVER:
       return Type::Receiver(zone);
-    case KNOWN_OBJECT:
+    case KNOWN_RECEIVER:
       return map.is_null() ? Type::Receiver(zone) : Type::Class(map, zone);
     case GENERIC:
       return Type::Any(zone);
@@ -406,7 +406,7 @@ CompareICState::State CompareICState::NewInputState(State old_state,
       if (value->IsInternalizedString()) return INTERNALIZED_STRING;
       if (value->IsString()) return STRING;
       if (value->IsSymbol()) return UNIQUE_NAME;
-      if (value->IsJSObject()) return OBJECT;
+      if (value->IsJSReceiver()) return RECEIVER;
       break;
     case BOOLEAN:
       if (value->IsBoolean()) return BOOLEAN;
@@ -429,12 +429,12 @@ CompareICState::State CompareICState::NewInputState(State old_state,
     case UNIQUE_NAME:
       if (value->IsUniqueName()) return UNIQUE_NAME;
       break;
-    case OBJECT:
-      if (value->IsJSObject()) return OBJECT;
+    case RECEIVER:
+      if (value->IsJSReceiver()) return RECEIVER;
       break;
     case GENERIC:
       break;
-    case KNOWN_OBJECT:
+    case KNOWN_RECEIVER:
       UNREACHABLE();
       break;
   }
@@ -465,12 +465,12 @@ CompareICState::State CompareICState::TargetState(
         return Token::IsEqualityOp(op) ? INTERNALIZED_STRING : STRING;
       }
       if (x->IsString() && y->IsString()) return STRING;
-      if (x->IsJSObject() && y->IsJSObject()) {
-        if (Handle<JSObject>::cast(x)->map() ==
-            Handle<JSObject>::cast(y)->map()) {
-          return KNOWN_OBJECT;
+      if (x->IsJSReceiver() && y->IsJSReceiver()) {
+        if (Handle<JSReceiver>::cast(x)->map() ==
+            Handle<JSReceiver>::cast(y)->map()) {
+          return KNOWN_RECEIVER;
         } else {
-          return Token::IsEqualityOp(op) ? OBJECT : GENERIC;
+          return Token::IsEqualityOp(op) ? RECEIVER : GENERIC;
         }
       }
       if (!Token::IsEqualityOp(op)) return GENERIC;
@@ -490,15 +490,15 @@ CompareICState::State CompareICState::TargetState(
       if (old_left == SMI && x->IsHeapNumber()) return NUMBER;
       if (old_right == SMI && y->IsHeapNumber()) return NUMBER;
       return GENERIC;
-    case KNOWN_OBJECT:
-      if (x->IsJSObject() && y->IsJSObject()) {
-        return Token::IsEqualityOp(op) ? OBJECT : GENERIC;
+    case KNOWN_RECEIVER:
+      if (x->IsJSReceiver() && y->IsJSReceiver()) {
+        return Token::IsEqualityOp(op) ? RECEIVER : GENERIC;
       }
       return GENERIC;
     case BOOLEAN:
     case STRING:
     case UNIQUE_NAME:
-    case OBJECT:
+    case RECEIVER:
     case GENERIC:
       return GENERIC;
   }